Mother BoardThe motherboard serves to connect all of the parts of a computer together. The CPU, memory, hard drives, optical drives, video card, sound card and other ports and expansion cards all connect to the motherboard directly or via cables.The motherboard can be thought of as the "back bone" of the computer.
Hard DiskA hard disk drive (HDD; also hard drive, hard disk, or disk drive) is a device for storing and retrieving digital information, primarily computer data.Introduced by IBM in 1956.Three main manufacturers: Western Digital, Seagate, and ToshibaOptical drives retrieve and/or store data on optical discs like CDs, DVDs, and BDs (Blu-ray discs) which hold much more information than classic portable media options like the floppy disk.Popular Optical Disc Drive Manufacturers: Lite-On IT, Memorex, NEC
Video CardThe video card is an expansion card that allows the computer to send graphical information to a video display device such as a monitor or projector.Popular Video Card Manufacturers: NVIDIA, Corporation, AMD, Matrix A sound card (also known as an audio card) is an internal computer expansion card that facilitates the input and output of audio signals to and from a computer under control of computer programs
1. Central Processing Unit(CPU)1. CPU or central processing unit is the main processing unit2. It determines the performance of the computer (processor speed)3. Can be said a BRAIN of computer4. Currently Pentium Chip (Processor) are most popular5. The Core 2 Duo is Intels second generation (hence, Core 2) processor made for desktops and laptops designed from the ground up to be fast while not consuming nearly as much power as previous CPUs.6. Dual core is simply a generic term referring to any processor package with two physical CPUs in one7. Dual core is better because it has 2 processors.
A drive bay is a standard-sized area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed.Drive bays are most commonly used to store disk drives, although they can also be used for front-end USB ports, I/O bays, card readers, fans, fan controllers, tool storage, and other uses.Expansion slots are specific slots on a PC motherboard that facilitate the placement of expansion cards.
2.RAM1. One of most important part of computer2. Random Access Memory RAM stores information temporarily3. More RAM in the computer more faster computer works4. RAM is in the form of a chip and different vendors have developed the RAM of different capacities
3.BIOS1. BIOS: Basic Input/Output system is a set of instructions in ROM2. Used to start most basic services of computer system.3. A built-in software that determines what a computer can do without accessing
BIOS(contd.)It contains all the code required to control the keyboard, display screen, disk drives, serial communications, and a number of miscellaneous functions.It is typically placed in a ROM chip that comes with the computer (it is often called a ROM BIOS). This ensures that the BIOS will always be available and will not be damaged by disk failures. It also makes it possible for a computer to boot itself.Because RAM is faster than ROM, though, many computer manufacturers design systems so that the BIOS is copied from ROM to RAM each time the computer is booted. This is known as shadowing.
4. Cooling system1. A cooling mechanism prevent damage to computer from heat2. Contains fans and sinks3. The CPU, Computer case, power supply, some Hard disk, some adapter cards need cooling
5. PCI(Peripheral ComponentInterconnect) slots1. Slot is the space provided on motherboard used to increase functionality of computer2. There are RAM slots, AGP (accelerated graphics port)slots and expansion slots.
1. Keyboard1. The keyboard is used to type something or input information to the computer.2. Connects to the system via cable or wireless connections3. There are different designs and models available4. An arrangement of letters, numbers, and special function keys that act as the primary input device to the computer
2. Mouse1. Most common input device used to give instructions to computer2. Connectivity via cable or wireless media3. Types: Track Ball, Optical mouse, IR mouse, Radio wave mouse4. An input device that allows the user to manipulate objects on the screen by moving the device along the surface of a desk.
3. Scanner1. Scanners allow you to transfer pictures and photographs to your computer2. Used to scan the images and pictures3. Using software you can convert printed documents into the text that you can use in the word processor
4. Joystick1. Another input device used to play games2. Available in many shapes
5. Microphone1. Used to give audio input2. Important in video conferencing
1. Monitor1. Monitor is used to display the information on the screen.2. Monitors come in many sizes and shapes, monochrome or full colors3. Today most computers use LCD(Liquid Crystal Display)
2. Speakers1. Speaker is the audio output device2. Used to listen songs and other audio media
3. Printer1. Printer takes the information from the PC and transfers it to the paper of different sizes2. There are three basic types of a printer such as dot matrix, inkjet and laser
Other Peripheral DevicesModemsDigital CameraSound and Video Card
1. Modem1. Modem is used for modulation and demodulation of data2. convert data analog to digital and digital to analog3. Can be internal and external4. Modems are measured by the speed which is called baud rate. The typical baud rate is 56Kb5. A device that sends and receives data to and from computers over telephone lines.
2. Digital Camera1. Device used to take digital photographs2. Images stores on the memory chip of camera3. Used in video conferencing
3. Sound card1. A circuit board that gives the computer the ability to accept audio input, play sound files, and produce audio output through speakers or headphones.2. Sound cards produce the sound like music and voice3. The older cards were 8, 16 and then 32 bits4. Allow output device to produce audio
4. Video card1. Alternatively referred to as a graphics card, video card, video board, or a video controller, a video adapter2. It allow a display device such as a monitor to display images from the computer